One VM SLOW after upgrade

[JohnDanger]

I just upgraded to B&R 9.5.
I have 3 hyper-v hosts with 5 Vms that I backup with Veeam.

After the upgrade to 9.5, my backup's of an Exchange 2010 VM is unusable, extremely slow.
It's the only VM on that particular Host.
1mb /per sec or LESS!!!!

My other VM's seem to be ok.

Any suggestions?

[Dima P.]

Hello and welcome to the community Richard,

Please clarify the bottleneck stats for the Exchange job? Thanks.

[JohnDanger]

It says that the bottleneck is the network but all my VM backups go over the same network infrastructure, except the physical hosts nics of course. Nothing has changed with that regard though.

[Mike Resseler]

Hi Richard,

So if I understand correctly, it is only that specific VM that is running on one Hyper-V host. All the other VMs on the two other hosts are still getting the normal speed. Correct?

Since VBR states that the bottleneck is the network, I would believe something has changed over there. So can you look at the following:

* Any windows installed (exchange server/ hyper-v host) that are not installed on the other servers (or vice versa)
* Difference in firmware for the NIC on the physical box?
* Can you use IPERF or Wireshark to test the speed between the VBR box and the VM?
* Nothing else that has changed just before you started seeing the issue?

If the output of IPERF or Wireshark is normal, then please log a support call. Maybe our engineers can figure out what is exactly wrong. We had many cases where an update, wrong NIC driver/ firmware or similar was causing the issue
thanks
Mike